Owner Nellcor Puritan Bennett LLC

Inventors Li, Youzhi; Lin, Andy; McKenna, Edward

Agent Pizzeys

Pub. Number AU-A-2011233634

PCT Pub. Number WO2011/123239

Priority 12/751,264 31.03.10 US

Filing date 15 March 2011

Wipo publication date 6 October 2011

A61B 5/1455 Measuring for diagnostic purposes

A61B 5/024 Measuring for diagnostic purposes - Measuring pulse rate or heart rate

G01N 21/25 Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light - Colour

G01N 21/31 Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry

G01N 21/41 Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light - Refractivity

G01N 21/47 Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light - Scattering, i.e. diffuse reflection